# Ultrathin photonic–plasmonic membranes supporting high-Q hybrid bound states in the continuum

https://mdr.nims.go.jp/datasets/119d4e6f-f516-4fc0-9ecc-9b052e7f4b7d

## File

- [Ultrathin photonic plasmonic membranes supporting high-Q hybrid bound states in the continuum.pdf](https://mdr.nims.go.jp/filesets/33593129-809c-42c4-bdea-2150c8ce2f5d/download) ([Detail](https://mdr.nims.go.jp/filesets/33593129-809c-42c4-bdea-2150c8ce2f5d.md))

## Id

119d4e6f-f516-4fc0-9ecc-9b052e7f4b7d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-18T05:49:34.952606Z

## Updated at

2026-03-19T05:27:13.122570Z

## Published at

2026-03-19T04:36:24.823644Z

## Doi



## First published url

https://doi.org/10.1080/27660400.2026.2639793

## Date published

2026-12-31

## Recorded date published

2026-12-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Ultrathin photonic–plasmonic membranes supporting high-Q hybrid bound states
    in the continuum
  title_type: original
  lang: en

## Description

- description: Plasmonic bound states in the continuum (BICs) offer a promising route
    to overcome the intrinsic trade-off between field confinement and radiation loss
    in nanophotonic systems. By exploiting the coupling of plasmonic and photonic
    systems, plasmonic BICs can achieve sharp spectral selectivity with strong near-field
    enhancement, making them attractive for compact and efficient optical devices.
    However, realizing high-Q resonances in plasmonic structures remains challenging
    due to Ohmic losses and the requirement of relatively thick metallic films. Here,
    we numerically demonstrate an ultrathin freestanding photonic–plasmonic membrane
    that supports hybrid guided and quasi-BIC resonances with record-high Q-factors
    in plasmonic architectures. By integrating a thin Ag layer (10-20 nm) with a dielectric
    SiN membrane, the hybrid coupling suppresses radiative leakage while preserving
    deep-subwavelength confinement, yielding Q-factors exceeding 2370. Remarkably,
    even when the total thickness of the photonic-plasmonic membrane is reduced to
    approximately 30 nm, the resonance maintains Q > 1300 with strong near-field intensity,
    a performance regime that cannot be achieved in metal-only plasmonic systems.
    The demonstrated strategy resolves the long-standing trade-off between near-field
    localization and radiative loss in plasmonics by leveraging hybrid BIC formation
    in an ultrathin membrane platform. Because the architecture is compatible with
    standard thin-film processing and operates with metal layers only a few tens of
    nanometers thick, it provides a practical route to compact, high-performance components
    for nanophotonic sensing, surface-enhanced spectroscopy, quantum emitter coupling,
    nonlinear optics, and subwavelength optoelectronics.
  description_type: abstract
  lang: und

## Creator

- name: Ya-Lun Ho
  role: author
  orcid: https://orcid.org/0000-0001-8274-5978
- name: Mu-Hsin Chen
  role: author
  orcid: https://orcid.org/0000-0002-3885-5720
- name: Chih-Zong Deng
  role: author
  orcid: https://orcid.org/0009-0005-2398-5353
- name: Chun-Hao Chiang
  role: author
  orcid: https://orcid.org/0000-0002-9066-4657
- name: Hsin-Chang Lin
  role: author
  orcid: https://orcid.org/0000-0001-8384-6690
- name: Yen-Ju Wu
  role: author
  orcid: https://orcid.org/0000-0003-2647-3407
- name: Masanobu Iwanaga
  role: author
  orcid: https://orcid.org/0000-0002-8930-6940

## Contact agent



## Publisher

organization: Informa UK Limited

## Managing organization



## Keyword

- subject: Plasmonic
  schema: not_defined
- subject: Photonic–plasmonic hybrid BICs
  schema: not_defined
- subject: Bound states in thecontinuum (BICs)
  schema: not_defined
- subject: High-Q
  schema: not_defined
- subject: Ultrathin metasurface
  schema: not_defined
- subject: Nanomembrane
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: 'Science and Technology of Advanced Materials: Methods'
  issn: '27660400'
  volume: '6'
  issue: '1'
  article_number: '2639793'

## Conference



## Related item



## Funding

- identifier: JP23K26155, JP25KF0083
  funder_name: JSPS KAKENHI

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: 33593129-809c-42c4-bdea-2150c8ce2f5d
  filename: Ultrathin photonic plasmonic membranes supporting high-Q hybrid bound
    states in the continuum.pdf
  content_type: application/pdf
  size: 6343626
  md5: e757c0a2f29ec53c83d9340ec2b50116

## Thumbnail

fileset_id: 33593129-809c-42c4-bdea-2150c8ce2f5d
filename: Ultrathin photonic plasmonic membranes supporting high-Q hybrid bound states
  in the continuum.pdf